Dereferencing struct member after mutation gives different results in Rust 1.45 compared with 1.44

[peterjoel]

This was mentioned by a user on stackoverflow.

struct Foo {
    x: i32,
}

fn main() {
    let mut foo = Foo { x: 42 };
    let x = &mut foo.x;
    *x = 13;
    let y = foo;
    println!("{}", y.x);
}

Rust 1.45 outputs:

42

Rust 1.44 outputs:

13

It seems to be fixed in Nightly and Beta. Only 1.45 has the problem.

I tried this code:

[peterjoel]

This can be resolved as a duplicate of #74739